JP3332728B2 - Ceiling suspended air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-suspended air conditioner, and more particularly to an improvement in a structure for supporting a blower and a heat exchanger.

[0002]

2. Description of the Related Art Conventionally, an air conditioner of a so-called ceiling-suspended type in which an indoor unit is mounted on a ceiling and an arrangement space such as a wall surface is not required is often used. In this type of air conditioner, two sets (hereinafter referred to as a pair) of heat exchangers are provided for the purpose of securing a large heat exchange capacity, and a blower is arranged to face each heat exchanger. Is common.

[0003] Therefore, at least two outlets (hereinafter, referred to as a pair) for blowing out the heat-exchanged air are provided at positions separated from each other, so that air can be blown over as wide a range as possible. I have.

A conventional ceiling-suspended air conditioner is shown in FIG. On the inner wall of the unit body 1 formed by bending a metal plate, a heat exchanger fixing plate 2 made of a metal piece will be described below.
The heat exchanger support plate 3, the motor receiving portion 4, the drain pump mounting base plate 5, the casing fixing screw receiving plate 6, and the like are respectively mounted by means such as welding.

The drain pump mounting base plate 5 includes:
The drain pump 7 is mounted and fixed. A fan casing 8 formed of a thin synthetic resin material is mounted and fixed to the casing fixing screw receiving plate 6 via a casing fixing screw 9.

In the fan casing 8, a cross flow fan 11 constituting the indoor blowers 10A and 10B is arranged. One end shaft of the fan 11 is pivotally supported by a rubber bearing 12 attached to the fan casing 8, and the other end boss is inserted into a bracket of the fan motor 13.

In each of the indoor blowers 10A and 10B, the positions of the fan motor 13 and the rubber bearing 12 are provided on opposite sides. This means that when the respective fan motors 13 are provided on the same side, the rotation directions of the respective motors must be reversed, and two types of fan motors are prepared.
This is because the number of components increases.

Each fan motor 13 is surrounded by a fan motor cover 14 and is fixed to the motor receiving portion 4. A nose 15 is provided along the longitudinal direction of the cross flow fan 11.

The pair of indoor heat exchangers 16 are inclined in a substantially C-shape when viewed from the side, and end plates at both ends are connected and fixed by end plate fixing plates 17. These heat exchangers 16
A drain pan 19 that collects drain water dropped from the heat exchanger 16 is disposed to face the lower end portion. Reference numeral 22 denotes a reservoir in which the suction part of the drain pump 7 is arranged.

A decorative panel 18 for closing the opening is attached to the opening on the lower surface of the unit main body 1. The decorative panel 18 is exposed from the ceiling surface of the room to be air-conditioned (not shown) into the room. A suction port 20 is provided at the center of the panel, and a pair of outlets 21 is opened at one side. ing.

[0011]

The above-described structure has no functional problem, but has the following structural problems. (1) The number of components other than the heat exchanger 16 and the indoor blowers 10A and 10B is large, and assembling is troublesome, resulting in poor workability. In particular, a number of parts must be attached to the unit body 1 by means such as welding.

(2) The heat exchanger 16 and the indoor blower 10
Since the number of components other than A and 10B is large, variations are likely to occur in finished assembled products. In particular, there is a problem in the finishing accuracy of the unit body 1.

(3) Since each of the fan casings 8 is formed of a thin synthetic resin material, if the pair of fan casings are simply connected and integrated, the strength at the short central portion is weak and breaks. There is fear.

(4) If the fan casings 8 are simply integrated, the strength of the central portion in the longitudinal direction is insufficient, and the central portion hangs. If this droop exceeds a predetermined range, there is a risk of contact with the cross flow fan 11.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the number of components for supporting a blower and a heat exchanger so as to reduce the time and labor required for assembling work. An object of the present invention is to provide a ceiling-suspended air conditioner that can reduce time and secure the rigidity of each component, thereby improving reliability.

[0016]

SUMMARY OF THE INVENTION In order to satisfy the above-mentioned object, a ceiling-suspended air conditioner according to the present invention has two sets of heat exchangers, two blowers and two outlets at symmetrical positions. In the ceiling-suspended air conditioner provided with: a fan casing for guiding a wind blown from the blower to a blower base formed of resin, a motor base on which a motor constituting the blower is mounted, and the heat exchange integrally molded heat exchanger support portion for supporting the vessel, and two sets of said fan base integrally molded with each other, the ventilator base
The heat exchanger support part supporting the heat exchanger faces
Formed together, both heat exchanger supports are reinforced
It is characterized by being connected via a rib .

[0017]

Further , the reinforcing rib is attached and fixed to the fixing plate for fixing the heat exchanger. Sa
Further, the blower base is provided with an uneven portion along an integral connection portion thereof, and the uneven portion positions an end of the heat exchanger.

By providing means for solving the above problems, the present invention provides a pair of heat exchangers, a pair of blowers and a pair of outlets at symmetrical positions, By integrating the components supporting the blower, it is possible to reduce the total number of components and increase the rigidity.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an air conditioner in which an indoor unit is of a ceiling suspension type. The unit main body 50 includes a top plate 51 having a U-shaped cross section, a side plate (not shown) that closes both left and right openings of the top plate, and a decorative panel 52 that closes a lower surface opening of the top plate 51. It is composed of

The top plate 51 and both side plates are made of sheet metal, are welded and assembled to each other, and are integrated when assembled as a product. Then, when mounted on the ceiling surface of the room to be air-conditioned, all of them are buried behind the ceiling.

On the other hand, since the decorative panel 52 is exposed from the ceiling into the room to be air-conditioned, it is molded with a synthetic resin material and finished beautifully. In the decorative panel 52, a suction port 53 is opened at the center, and two (hereinafter, referred to as a pair) outlets 54 are opened at one side of the suction port.

Reference numeral 57 denotes a pair of heat exchangers arranged in a C-shape, which are housed in the unit main body 50. A drain pan 55 for collecting drain water dropped from the heat exchanger 57 is disposed at the lower end of the heat exchanger 57 so as to face the drain pan 55. Reference numeral 55a denotes a drain water reservoir that communicates with the drain pan.

At the lower part of the heat exchanger 57, a pair of drain guides 56, which are formed in a U-shape like the heat exchanger 57, are superimposed on the heat exchanger 57, and the lower end of the drain guide 56 has the lower end. It is arranged to be supported by the drain pan 55.

In the drain guide 56, receiving trough-shaped crosspieces are assembled in parallel at predetermined intervals in the horizontal direction, and are inclined downward from both side ends toward the center. A central gutter is provided at the center along the direction perpendicular to the bar, that is, along the vertical direction, and communicates with the bar.

Therefore, the heat exchange air is freely conducted along the space of the drain guide 56, and the drain water received by the crosspiece flows along the slope, and the drain water in the drain pan 55 flows from the central gutter part. Is to be led to.

Each of the pair of heat exchangers 57 is of a so-called find tube type, and is positioned and fixed to a blower base 58 which will be described later.

Reference numeral 59 denotes a drain pump assembly which is disposed in the drain pan 55 and has a function of forcibly discharging drain water collected in the drain water reservoir 55a to a drain passage (not shown).

In opposition to each of the heat exchangers 57,
An indoor blower 60 is arranged. That is, the indoor blower 6
0 is provided as a pair. These indoor blowers 60 are driven to rotate, so that the air to be conditioned is sucked into the unit main body 50 from the suction port 53, passed through a gap formed in the drain guide 56, and guided to the heat exchanger 57. The air is blown from the air outlet 54 through the blower 60.

The indoor blower 60 includes a fan motor 61.
And a cross flow fan 63 having one end connected to the rotation shaft of the fan motor and the other end pivotally supported by a rubber bearing 62.

The axial length of the cross flow fan 63 is formed to be the same as the width of the heat exchanger 57 and is opposed to each other. The fan motor 61 of each blower 60 is provided at the end opposite to the cross flow fan 63 as in the conventional case.

The fan motor 61 is mounted and fixed to a blower base 58, which will be described later, by a motor cover assembly 64 and the rubber bearing 62 is directly mounted. That is, the pair of indoor blowers 60 is mounted and fixed to the blower base 58 together with the pair of indoor heat exchangers 57.

Next, the blower base 58 will be described in detail. As shown in FIG. 2 and FIG.
Reference numeral 8 denotes a resin molded using a resin material. The blower base 58 includes a pair of heat exchangers 57, respectively.
, And a pair is provided facing the indoor blower 60. Then, one side edge of each other is aligned and integrally connected.

The integral connecting portion of these blower bases 58
As shown in FIG. 5 in an enlarged manner, a central portion has a large triangular cross section protruding in one direction, and both sides thereof have a small triangular cross section protruding in the other direction. is there.

As shown in FIGS. 2 and 3 again, a fan casing 66 is formed integrally with a side end along the longitudinal direction of each blower base 58. A pair of heat exchanger support portions 67 are integrally formed at both longitudinal ends of each blower base 58. That is, these heat exchanger support parts 67
Are integrally connected to the side edges of the fan casing 66.

The edge 67a of each heat exchanger support 67 is obliquely inclined, and the edges 67a of the heat exchanger support 67 facing each other are formed in a substantially V-shape. .

The base ends of the heat exchanger supporting parts 67 facing each other are connected by reinforcing ribs 68. As shown in FIG. 4 in an enlarged manner, the reinforcing rib 68 is formed in a substantially U-shape in plan view, a pair of side edges are integrally connected to the heat exchanger support portion 67, and a lower edge of the figure is a blower. It is integrated with the base 58. A screw hole 68a is provided on the upper end surface of the reinforcing rib 68.

In this manner, the pair of heat exchanger supporting portions 6
7 are integrally connected by the reinforcing ribs 68, and the rigidity at the short center portion, that is, the heat exchanger supporting portion can be increased. Therefore, there is no possibility that this portion is damaged.

As shown in FIGS. 2 and 3 again, a motor base 69 is integrally formed on one side of the asymmetric position between the blower bases 58. That is, a pair of the motor bases 69 is also provided.

The side wall of the heat exchanger support 67 facing the motor base 69 has the blower 60
A mounting hole a for mounting the rubber bearing 62 is provided.

The blower base 5 thus formed
In order to assemble the indoor unit based on 8, first, the indoor blower 60 is attached to the blower base 58. The rotation axis of the fan motor 61 constituting the blower 60 is
One end of the cross flow fan 63 is fitted, and a rubber bearing 62 is fitted to the other end.

As an actual operation, the blower base 58 is fixed to the unit main body 50 in which the top plate 51 and the both side plates are integrated by using a fixing tool such as a screw (not shown). Then, the rubber bearing 62 constituting the indoor blower 60 is mounted in the mounting hole a in the side wall of the heat exchanger support 67 provided integrally with the blower base 58.

As the next operation, the motor base 69
Is engaged with the fan motor 61. Then, the fan motor 61 is covered with a motor cover assembly 64 shown in FIG. 1 only, and the fan motor is mounted and fixed to the motor base 69. In this state, the pair of indoor blowers 60 are attached and fixed to the corresponding blower bases 58, respectively.

Next, the heat exchanger 57 is mounted on the heat exchanger support 67. That is, the heat exchanger support 67
The end plate portion 57a of the heat exchanger 57 integrally formed in a V-shape is supported by the edge portion 67a formed in a V-shape.

Then, the end plate portion 57a is attached and fixed to an end edge portion 67a of the heat exchanger support portion 67 with an attachment screw which is an attachment (not shown). In addition, both end portions of each heat exchanger 57 are integrally connected by a triangular connecting plate 57b, and an L-shaped bent portion is formed at a portion where the heat exchangers 57, which are the apexes, meet each other. One side piece of the fixing plate 70 is mounted via mounting screws 71.

With the heat exchanger 57 supported by the heat exchanger support 67, the other side of the fixing plate 70 is
8 on the end face. The heat exchanger 57 can be mounted and fixed to the reinforcing rib 68 by screwing the mounting screw 72 into the screw hole 68a of the reinforcing rib 68 via the fixing plate 70.

Further, the ends of the pair of heat exchangers 57 formed in a C-shape are aligned and positioned with the concave-convex portions 65 provided along the integral connection portion of each blower base 58. Therefore, the upper and lower ends and both sides in the longitudinal direction of the heat exchanger 57 are also attached and fixed to the heat exchanger support portion 67, and the position is secured.

In this case, the uneven portion 65 is formed, and the uneven portion 65 serves as a rib to form the blower base 58.
The strength of the central portion in the longitudinal direction is improved, and the end portion of the heat exchanger 57 is arranged in the uneven portion 65, so that the strength is further improved.

Thereafter, the drain guide 56 is placed and set on the heat exchanger 57, and a drain pan 55 is assembled from above so as to face the heat exchanger 57, and the drain guide 56 is fixed by the heat exchanger and the drain pan 55. Hold the end.

That is, since the indoor blower 60 and the heat exchanger 57 are mounted on the motor base 69 and the heat exchanger supporting portion 67 integrated with the blower base 58, the number of components is reduced, and the mounting of these components is troublesome. Without hanging,
Work time is short.

Further, since the components formed on the blower base 58 are formed integrally with the blower base 58, there is no variation in the assembling (forming) accuracy, and the workability is improved. Finishing accuracy is very good.

As described above, the basic assembling work of the indoor unit is completed, and the decorative panel 52 is attached to the opening on the lower surface of the unit main body 50 when the indoor unit is installed on the ceiling. The air conditioner includes the heat exchanger 57 configured as described above, the indoor blower 60, and the blower base 58. The air conditioner performs a refrigeration cycle operation on the heat exchanger 57 and rotates the indoor blower 60.

The air to be conditioned is sucked into the unit main body 50 from the suction port 53 and is guided to the heat exchanger 57 through a gap formed in the drain guide 56. Here, the heat exchange air exchanges heat with the refrigerant guided through the flow path of the heat exchanger 57, is guided by the fan casing 66, and is blown out from the outlet 54. That is, air conditioning of the room to be air-conditioned is achieved.

The heat exchanger 57 condenses the moisture contained in the air to be conditioned in accordance with the heat exchange action. The heat exchanger surface is cooled below the dew point and drain water is generated.
The drain water drops, is directly received by the drain guide 56, and is further guided to the drain pan 55. Alternatively, it flows down along the heat exchanger 57 and is received by the drain pan.

[0055]

As described above, according to the present invention , two sets of heat exchangers, two blowers and two blowout ports are provided at symmetrical positions, and a blower base formed of resin is provided with: A fan casing for guiding the direction of the wind blown from the blower, a motor base on which a motor constituting the blower is mounted, and a heat exchanger support for supporting a heat exchanger are integrally formed, and two sets of the blower bases are connected to each other. Since they are integrally molded, the number of components that support the blower and heat exchanger is reduced, reducing the labor and time required for assembly work and ensuring the rigidity of each component. This has the effect of improving reliability.

Further, in the blower base, the heat exchanger supporting portions for supporting the heat exchanger are formed to face each other, and the two heat exchanger supporting portions are connected via the reinforcing rib.
The rigidity of the heat exchanger supporting portion can be increased.

Further, since the heat exchanger is fixed to the reinforcing ribs, the reinforcing ribs can be effectively used, and the rigidity of the heat exchanger can be improved. Furthermore, since an uneven portion is formed in the central flat portion of the portion where both are joined, and the end of the heat exchanger is aligned with the uneven portion, the strength of the blower base can be increased and the heat exchanger can be easily positioned. And the displacement is reliably prevented.

[Brief description of the drawings]

FIG. 1 is a schematic exploded perspective view of a ceiling-suspended air conditioner showing an embodiment of the present invention.

FIG. 2 is a side view of the blower base according to the embodiment, to which a heat exchanger is attached.

FIG. 3 is an exploded perspective view of the heat exchanger and the blower base according to the embodiment;

FIG. 4 is a perspective view of a blower-base reinforcing rib of the embodiment.

FIG. 5 is a mounting diagram of the concave and convex portions of the blower base and the heat exchanger positioned therein according to the embodiment;

FIG. 6 is a schematic exploded perspective view of a conventional ceiling-suspended air conditioner.

[Explanation of symbols]

 57: heat exchanger, 60: indoor blower, 54: outlet, 66: fan casing, 61: motor, 69: motor base, 67: heat exchanger support, 58: blower base, 68: reinforcing rib, 65 ... Uneven part.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-10542 (JP, A) JP-A-53-97241 (JP, A) JP-A-58-83137 (JP, A) 29019 (JP, U) Actual opening 60-60926 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 1/00 321 F24F 1/00 401 F24F 1/00 391 F24F 1 / 00 426 F24F 1/02 331 F24F 1/02 411 F24F 1/02 436

Claims (3)

(57) [Claims] 1. Two sets of heat exchangers at symmetrical positions,
In a ceiling-suspended air conditioner having two blowers and two blowout ports, a fan casing for guiding a wind blown from the blower to a blower base formed of resin, and a motor constituting the blower The heat exchanger supporting portion that supports the motor base and the heat exchanger to which is attached is integrally molded,
And two sets of the blower bases are integrally formed with each other, and the blower base is a heat exchanger supporting the heat exchanger.
Supports are formed facing each other and both heat exchangers
The ceiling-suspended air conditioner, wherein the support portion is connected via a reinforcing rib . 2. A ceiling-suspended air conditioner according to claim 1 , wherein said reinforcing rib is fixedly attached to said fixing plate for fixing said heat exchanger. 3. The ceiling suspension type according to claim 1, wherein the blower base has an uneven portion along an integral connection portion thereof, and the uneven portion positions an end of the heat exchanger. Air conditioner.